A force of 150 N is applied at an angle of 60 degrees to the horizontal to pull a sled over a distance of 20 meters on a frictionless surface. Calculate the work done by the force.

A car of mass 1500 kg is moving with a speed of 25 m/s. If the brakes are applied and the car comes to a stop in 10 seconds, what is the average power dissipated by the brakes?

A motor lifts a 200 kg object to a height of 40 meters in 20 seconds. Calculate the power output of the motor. $ \displaystyle \left( {Take\text{ }g=10\,m/{{s}^{2}}} \right)$

A force of 120 N is applied at an angle of 45 degrees to move a box 15 meters. Calculate the work done by the force.

A spring with a spring constant of 400 N/m is compressed by 0.25 meters. Calculate the potential energy stored in the spring.

An electric motor exerts a constant force of 250 N to move an object at a constant speed of 5 m/s. Calculate the power developed by the motor

A block of mass 6 kg is pulled up an incline plane of length 12 meters and height 8 meters by a force of 50 N acting parallel to the incline. Calculate the work done by the force. $ \displaystyle \left( {Take\text{ }g=10\,m/{{s}^{2}}} \right)$

A 3 kg mass is attached to a spring with a spring constant of 200 N/m. The spring is compressed by 0.3 meters. Calculate the potential energy stored in the spring.

A car engine provides a power output of 150 kW. If the car travels with a constant speed of 30 m/s, calculate the force exerted by the engine.

An elevator lifts a 1000 kg load to a height of 50 meters in 25 seconds. Calculate the power output of the elevator motor..$\displaystyle \left( {Take\text{ }g=10\,m/{{s}^{2}}} \right)$

A 0.8 kg ball is thrown vertically upwards with an initial velocity of 20 m/s. Calculate the maximum height reached by the ball. $ \displaystyle \left( {Take\text{ }g=10\,m/{{s}^{2}}} \right)$

A crane lifts a 750 kg load to a height of 30 meters in 20 seconds. Calculate the average power developed by the crane.$ \displaystyle \left( {Take\text{ }g=10\,m/{{s}^{2}}} \right)$

A force of 90 N is applied at an angle of 30 degrees to the horizontal to move a 10 kg box over a distance of 10 meters. Calculate the work done by the force.$ \displaystyle \left( {Take\text{ }g\text{ }=\text{ }10\,m/{{s}^{2}}} \right)$

A 4 kg object is released from a height of 10 meters. Calculate its velocity just before it hits the ground.$ \displaystyle (Take\text{ }g=10m/{{s}^{2}}g)$

A person weighing 800 N climbs a 10-meter-high ladder in 5 seconds. Calculate the power developed by the person.